Census place · GEOID 2458900 · Montgomery County
Olney, MD ZIP codes
5 ZIP/ZCTAs intersecting this Census place (CDP) in Montgomery County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Olney (GEOID 2458900). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 138,350 (5 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Olney, MD

ZIP/ZCTA overlap with Olney
Population overlap
Share of each ZIP/ZCTA’s population located within Olney, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Olney
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 20832 | Olney | Montgomery County | 25,766 | $166,892 |
| 20833 | Brookeville | Montgomery County | 7,868 | $203,631 |
| 20853 | Rockville | Montgomery County | 31,438 | $157,168 |
| 20860 | Sandy Spring | Montgomery County | 2,062 | — |
| 20906 | Silver Spring | Montgomery County | 71,216 | $92,964 |
USPS associates these ZIPs with Olney
These codes list Olney as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 20830 | Olney | Montgomery County | 373 | — |